ak4373 ETC-unknow, ak4373 Datasheet - Page 37

• Manufacturer Part Number: ak4373
• Description: Low Power Stereo Dac With Hp/spk-amp
• Manufacturer: ETC-unknow

DIF2
0
Mode
■
The PDN pin must be held to “L” upon power-up. The 4373 should be reset by bringing PDN pin “L” for 150ns or more.
All of the internal register values are initialized by the system reset. After exiting reset, VCOM, DAC, HPL, HPR, LOUT,
ROUT, SPP and SPN switch to the power-down state. The contents of the control register are maintained until the reset is
completed.
The DAC exits reset and power down states by MCKI after the PMDAC bit is changed to “1”. The DAC is in power-down
mode until MCKI is input.
■
Three types of data formats are available and are selected by setting the DIF1-0 bits
data is MSB first, 2’s complement format. Audio interface formats can be used in both master and slave modes. LRCK
and BICK are output from the AK4373 in master mode, but must be input to the AK4373 in slave mode.
In Modes 1- 5 the SDTI is latched on the rising edge (“↑”) of BICK.
In Modes 0/6/7 (DSP mode), the audio I/F timing is changed by BCKP and MSBS bits
MS0991-E-00
0
1
2
3
4
5
6
7
System Reset
Audio Interface Format
DIF1
0
DIF2 bit
DIF0
0
0
0
0
1
1
1
1
0
MSBS
DIF1 bit
0
0
1
1
0
0
1
1
0
0
1
1
BCKP
DIF0 bit
0
1
0
1
0
1
0
1
0
1
0
1
Table 18. Audio Interface Format in Mode 0
MSB of SDTI is latched by the falling edge (“↓”) of the BICK
just after the rising edge (“↑”) of the first BICK after the rising
edge (“↑”) of LRCK.
MSB of SDTI is latched by the rising edge (“↑”) of the BICK
just after the falling edge (“↓”) of the first BICK after the rising
edge (“↑”) of LRCK.
MSB of SDTI is latched by the 2nd falling edge (“↓”) of the
BICK after the rising edge (“↑”) of LRCK.
MSB of SDTI is latched by the 2nd rising edge (“↑”) of the
BICK after the rising edge (“↑”) of LRCK..
Table 17. Audio Interface Format
16/20/24 bit I
16/20/24 bit MSB justified
16 bit LSB justified
20 bit LSB justified
24 bit LSB justified
16 bit DSP Mode
20 bit DSP Mode
24 bit DSP Mode
SDTI (DAC)
- 37 -
2
S compatible
Audio Interface Format
32fs or ≥48fs
32fs or ≥48fs
BICK
≥32fs
≥32fs
≥40fs
≥48fs
≥40fs
≥48fs
(Table
(Table
17). In all modes, the serial
18,
Table 19
Figure 34
Figure 36
Figure 37
Figure 35
Figure 35
Table 18
Table 18
Table 18
Figure
Figure 30
Figure 31
Figure 32
Figure 33
and
Figure
[AK4373]
Table
2008/09
(default)
20).
(default)